Heel elevator for exercise



FIG. 1 is a top, front, left perspective view of a heel elevator for exercise showing the claimed design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The right side elevational view is a mirror image of the left side. Any shading and cross-hatching are not features of the design but are utilized to illustrate the surface contours of the design in the drawings. The broken lines in the Figures are for illustrative purposes only, and form no part of the claimed design. 

CLAIM The ornamental design for a heel elevator for exercise, as shown and described. 